Held annually on the first to second Sunday in July. On the eighth day, a large mikoshi (portable shrine) from Yasaka Shrine on Enoshima is carried from the shrine to Koyuguri Shrine on the mainland. Along the way, the mikoshi is carried into the ocean. On the mainland, the Yasaka mikoshi is met with a mikoshi from Koyuguri Shrine. They then parade together along a shopping street before the Yasaka mikoshi goes back to Enoshima at around 6 pm. Also see the video at YouTube.
八坂神社神幸祭「神輿海中渡御」